Stimulation device



FIG. 1 is a perspective view taken from the front, top and right side of a stimulation device showing the design;

FIG. 2 is a bottom plan view of the stimulation device of FIG. 1; and,

FIG. 3 is a left side elevation of the stimulation device of FIG. 1. 

CLAIM The ornamental design for a stimulation device, as shown and described. 